Among all rectangles that have a perimeter of 42, find the dimensions of the one whose area is largest

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Determine if the function below is continuous. a. continuous b. not continuous, 1 hole c. not continuous, > 2 holes d. not continuous, 2 holes

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.